This video tutorial shows How to make a Macrame Bracelet with fish symbol in another way. Historical explanation: The origin of this acronym is something else again. It is not in the Bible. No one really knows who first came up with the acronym ICHTHYS, ( in Greek, it is an acronym for Jesus Christ, the Son of God, our Savior ) used by early Christians as a secret Christian symbol and now known colloquially as the "sign of the fish" or the "Jesus fish".